They're not really very good, though, are they?
Saw a "Betcha Can't Play This" lick on a Guitar World DVD, and they totally butchered up the execution. Something tells me that these guys do a lot of comping and retakes in the studio, and mask their live playing with a wall of reverb and distortion. Just a guess.
Thing is, though, they're young dudes. There's plenty of time for them to build up professional-level chops like Vai (or whoever, insert the guitar hero you don't hate here), and they're definitely two guys who COULD rise to that challenge.
Alexi Laiho is similar. He's not very disciplined and his playing is therefore sloppy at times, as though he's overextending himself compared to his actual abilities. But that pushing on (despite fingers not cooperating) will eventually see him as one of his generation's true guitar heroes if he's smart.
It goes without saying, of course-- all those guys can play circles around me. Easy to be an armchair critic.